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These seem like just another capacitative discharge type ignition amplifier. I believe Nology makes spark plug wires that achieve the same thing for stock plugs (for non DIS cars). Here's my take on the ignition system of a car:
The ignition event in a cylinder is a complex process. First off just making a better or bigger explosion isn't necessarily better. In doing so you being to load the piston (and subsequently rod, bearings and crank). In a perfect world maximum cylinder pressure would occur around the time the piston is halfway through it's stroke so that torque would be highest. It would reach a minimum state just as the piston reached the bottom of it's stroke. Of course this isn't possible as the spark event expands spherically into a cylindrical geometry. However, it is possible to find a happy medium and that's what most automotive manufacturers have done from the getgo. In general, you only want a more powerful spark when your stock ignition system can no longer consistently cause a spark to jump the gap due to some change you've made to the rest of the system (higher compression, higher boost levels, exotic fuels, etc). Properly gapped plugs with a good electrical system will always work best in the long run. On the other hand if you have some car that's putting out just enough HP to move the car and still meet emissions standards, you may see an improvement by running an ignition amplifier (or if you tow large objects), assuming you don't floor it.
"The 300ZX Turbo is a dance; it's a song; it's rolling, roaring automotive art. There is no color that doesn't suit it. There is no mood-lifting chemical substance it can't replace." - Automobile Magazine |
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